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MHRoC-Rathalos Art 001
English: Rathalos
Japanese: リオレウス
Korean: 리오레우스
Nicknames: Los, King
English: King of the Skies, King of the Heavens
Japanese: 火竜
Korean: 화룡
General Information
Species: Flying Wyvern
Element/s: Status Effect-Fireblight MH4 Icon Fire
Ailment/s: StatusEffect04 Stun
StatusEffect05 Poison
Status Effect-Fireblight MH4 Icon Fireblight (3rd Gen onwards)
Status Effect-Severe Fireblight MH4 Icon Severe Fireblight (3rd Gen onwards)
Weakest to: Status Effect-Iceblight MH4 Icon Ice (2nd Gen)
Status Effect-Waterblight MH4 Icon Water (2nd Gen)
Status Effect-Dragonblight MH4 Icon Dragon (2nd Gen onwards)
Status Effect-Thunderblight MH4 Icon Thunder (3rd Gen)
Weakness Sign: Limping
Signature Move: Sky attack and fireball
Habitats: Forest and Hills, Deserted Island, Volcano, Gorge, Old Swamp, Old Volcano, Tower, Tower Summit, Highland, Ancestral Steppe, Volcanic Hollow, Heaven's Mount, Everwood
Monster Size: Gold Crown Large 2248.6 / 2143.4 (MH3)
Gold Crown Small 1140.6
Monsters in Relation: Rathian, Azure Rathalos, Silver Rathalos, Zerureusu
Generation: First

Rathalos are Flying Wyverns introduced in Monster Hunter.

MH4-Rathalos Render 001


Rathalos are large, bipedal wyverns with a spiny, armored hide covering their body. Their outer shell features much brighter and more vibrant colors than that of their female counterpart, the Rathian. It is primarily bright red, with black markings throughout. Like the Rathian, Rathalos possess a flame sac which is used to produce deadly flaming projectiles from the mouth. The talons upon a their feet are highly poisonous and are known to to inflict toxic mortal wounds on larger prey. In addition, their long, thick tail features a heavy spiked club at the end. Rathalos' wing membranes feature ornate patterns which are likely used to attract potential mates.


Rathalos are expert flyers, and as such are prone to hunting from the skies. By launching a surprise aerial attack, they can inflict poisonous wounds with their talons or burn prey with flaming projectiles. On the ground, Rathalos remain formidable opponents. Using their powerful legs, they can chase down prey from a distance or inflict blunt-force damage with their clubbed tail. At a close enough range, they are known to use their sharp teeth to bite at foes as well.


Rathalos are highly territorial monsters, and as such, are aggressive towards intruders. They will chase away or attempt to kill any monster which may pose a threat to their land. While hunting, Rathalos will stalk prey from the air before swooping in for the kill. Once they have successfully brought down their prey, they will carry it away to eat in private, safe from scavengers or other large monsters which might attempt to steal the kill.


Rathalos have been spotted in many kinds of environments, from the temperate Forest and Hills to the extreme heat of the Volcano. As a master of flight, they will travel far and wide, searching for prey from the skies.

Other Non-Subspecies Forms

Hard Core (HC) Rathalos

FrontierGen-HC Rathalos Render 001 (Edited)

Appears older with larger muscle mass and more developed spikes. New behavior includes an attack during which he instantly jumps into the air and performs his famed poison claw attack instantly.

Game Appearances

Chronological Appearances
First US / EU Appearance: First JP Appearance: Latest Appearance:
Logo-MH1 (2004) Logo-MH1 (2004) Logo-MH4U (2015)

In-Game Description

Monster Hunter Freedom 2 / Monster Hunter Freedom Unite
MHFU-Rathalos Icon Male wyvern that keeps a nest and patrols its patch of territory from the air in search of prey. Its claws are filled with a poison that weakens its quarry.
Monster Hunter 3
MH3-Rathalos Icon Terrible wyverns called the 'Kings of the Skies'. Together with Rathian, they stake wide territories centered around their nests. Rathalos descend on invaders from the sky, attacking with poison claws and breath of fire.
Monster Hunter Portable 3rd
MHP3-Rathalos Icon 天空の王者と呼称され、畏れられる飛竜。雌火竜と共に巣を中心とした広いテリトリーを形成し、空から監視する。テリトリーに侵入した者には優れた飛行能力で上空から急降下し、毒を含む強力な爪で襲い掛かってくる。火を吐くことから “火竜” と呼ばれる。
Monster Hunter 3 Ultimate
MH3U-Rathalos Icon Terrible wyverns called the 'Kings of the Skies'. Together with Rathian, they stake wide territories centered around their nests. Rathalos descend on invaders from the sky, attacking with poison claws and breath of fire.
Monster Hunter 4
MH4-Rathalos Icon 天空の王者と呼称され、畏れられる飛竜。雌火竜と共に巣を中心とした広いテリトリーを形成し、空から監視する。 テリトリーに侵入した者には優れた飛行能力で上空から急降下し、毒を含む強力な爪で襲い掛かってくる。 火を吐くことから”火竜”と呼ばれる。
Threat Level (危険度): ★★★★★
Monster Hunter 4 Ultimate
MH4-Rathalos Icon Terrible wyverns called the 'Kings of the Skies'. Along with Rathians, they stake wide territories centered around their nests. Rathalos descend on invaders from the sky, attacking with poison claws and breath of fire.
Threat Level (危険度): ★★★★★
Monster Hunter Frontier G
MHFG-Rathalos Icon (?)

Breakable Parts

Tail (Sever)
Wings (x2)

Element/Status Effectiveness

Information taken from

Hitzone Cut. D. Imp. D. Shot D. Fire Water Thunder Ice Dragon
Head 75 70 60 0 15 20 15 35
Neck 44 40 20 0 10 15 10 20
Back 25 30 20 15 10 15 10 25
Stomach 44 40 15 0 5 20 5 10
Tail 30 30 25 0 5 10 5 25
Wings 25 20 25 0 10 15 10 20
Legs 30 25 45 0 5 10 5 10

Damage Effectiveness

For the damage formula (how it's calculated), hitzone charts, Rathalos info and more click the following links: Monster Hunter 3 Damage Formula or Monster Hunter 3 Hitzone Charts. Images created by Inkoseh.

Element Damage
Hitzone Fire Water Thunder Ice Dragon
Head 0 15 20 15 35
Neck 0 10 15 10 20
Back 15 10 15 10 25
Stomach 0 5 20 5 10
Tail 0 5 10 5 25
Wing 0 10 15 10 20
Foot 0 5 10 5 5
Average 0 10 15 10 20
Status Effect
Poison Paralysis Sleep Fatigue Knockout
Initial Tolerance 180 180 180 180 150
Tolerance Inc. (max) +100 (580) +110 (620) +100 (580) +75 (480) +100 (550)
Tolerance Recovery 5 / 10 sec 5 / 10 sec 5 / 10 sec 5 / 10 sec 5 / 10 sec
Duration 60 sec 10 sec 30 sec 0 10 sec
Damage 150 + 5 0 0 200 0

Item Effectiveness

Item Effect
Item Name Able Effectiveness Duration Notes
1st time 2nd time
Pitfall Trap ★★★
Shock Trap ★★★
Flash Bomb ★★★ Only works if monster is facing the flash bomb when it goes off. Also works to free a pinned hunter.
Sonic Bomb x ☆☆☆
Dung Bomb ★★★ Used to get out of Pin Attack and will (sometimes) make him change area.
Meat ★☆☆ Only works when the monster has not noticed the hunter.


  • Rathalos may use his dive bomb attack as the very first attack during a hunt (though this happens quite rarely).
  • So far Rathalos have appeared in every single Monster Hunter game in the series, even including the spin-off MH Diary: Poka Poka Felyne Village.
  • According to one of the Uniqlo Monster Hunter 10th Anniversary T-Shirts, the size of the foot of a Rathalos is 221 centimeters. This may also apply to Azure Rathalos, as the shirt is focused on the main monsters of every generation.

  • Rathalos is the flagship monster of the original Monster Hunter game, and is often considered by fans as the flagship monster of the entire series.

  • Just as with Rathian, Rathalos can pin down a hunter and restore lost Stamina, this can be stopped by running and tripping. Rathalos is weakest to Dragon, followed by Thunder. Also, like Rathian, breaking the wing(s) does not stop its aerial attacks or travel. It can recover Stamina by eating a medium-sized Herbivore, mainly Aptonoth, Slagtoth, and Gargwa.

  • Its back can be broken.
  • Rathalos gains some new moves.
    • During Rathalos' dive bomb attack, he will now breathe fireballs during that attack, so the hunter can not stand still and heal or sharpen like in generations before.
  • It can be infected by the Frenzy Virus.

  • Rathalos can be a pet.

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